CN207894715U - A kind of Multi-axial Loading test device of finite element analysis - Google Patents

Abstract

A multi-axial loading test device for structural static tests, which generates multi-axial loading through computer motion control, and performs bending, torsion, shearing, tension and compression deformation on the measured structure, and the deformation value of each measuring point is obtained by the displacement sensor. The strain at each measuring point is measured by the strain sensor. The device is easy to operate and automatic, and is suitable for high-precision static tests of various structures.

Description

A Multiaxial Loading Test Device for Structural Static Test

Technical field:

The utility model relates to a structural static test device, in particular to a multi-axis loading test device for a structural static test.

Background technique:

Static tests are required for many practical engineering structures, especially the structural parts on space satellites. The usual static test is loaded by a testing machine or a hydraulic jack. The testing machine is generally loaded in one direction, and one or two directions of bending, shearing, torsion, tension and compression are performed at a time. Multiple hydraulic jacks can be used for simultaneous loading, but the control Accuracy and handling are poor.

Utility model content:

The purpose of the utility model is to provide a multi-axis loading test device for structural static tests aiming at the deficiencies of the prior art. The device adopts computer control for multi-axis loading measurement, which has high measurement accuracy, high degree of automation and easy operation.

Technical scheme of the utility model:

The structural part to be tested is fixed on the loading table, and the loading tool is fixed on the upper end of the tested node; the upper end of the tension and compression loading arm is fixed on the frame, and the lower end acts on the upper end of the loading tool; the torsion loading arm acts on both ends of the loading tool in the horizontal direction; The loading arm acts on both ends of the loading tool in the vertical direction; the shear loading arm acts on one end of the loading tool in the horizontal direction; the computer controls the tension and compression loading arm, torsion loading arm, bending loading arm, and shearing loading arm through the motion control card ; The strain sensor and the displacement sensor are connected to the computer; the computer processes and obtains the static test result of the measured structure.

The beneficial effects of the utility model are: compared with the prior art, the utility model is an automatic testing device for multi-point loading based on a computer-controlled motion control card, which has high measurement accuracy, high degree of automation and easy operation.

Description of drawings:

Fig. 1 is a structural representation of the utility model.

Marks in the figure: 1 tension and compression loading arm, 2 torsion loading arm, 3 bending loading arm, 4 shearing loading arm, 5 frame, 6 loading tooling, 7 tested structural member, 8 strain sensor, 9 displacement sensor, 10 computer, 11 motion control cards.

Detailed ways:

As shown in Figure 1, a multi-axial loading test device for structural static tests. Including 1 tension and compression loading arm, 2 torsion loading arm, 3 bending loading arm, 4 shear loading arm, 5 frame, 6 loading tooling, 7 tested structure, 8 strain sensor, 9 displacement sensor, 10 computer, 11 motion control Card.

The tested structural member 7 is fixed on the loading table, and the loading tool 6 is fixed on the upper end of the tested structural member 7; the upper end of the tension and compression loading arm 1 is fixed on the frame 5, and the lower end acts on the upper end of the loading tool 6; the torsion loading arm 2 Act on the two ends of the loading tooling 6 in the horizontal direction; the bending loading arm 3 acts on the two ends of the loading tooling 6 in the vertical direction; the shearing loading arm 4 acts on one end of the loading tooling 6 in the horizontal direction; the computer 10 passes through the motion control card 11 Control the tension and compression loading arm 1, the torsion loading arm 2, the bending loading arm 3, and the shearing loading arm 4; the strain sensor 8 and the displacement sensor 9 are connected to the computer 10; the computer 10 processes and obtains the static test results of the tested structural member 7.

The working principle of the multi-axis loading test device for the structural static test is: the motion control card drives the bending, shearing, torsion, tension and compression loading arms at different action points under the control of the computer, and can independently bend, The sub-item static tests of shearing, torsion, tension and compression can also be carried out at the same time, and the test results of strain sensor and displacement sensor can be automatically saved to the computer.

Claims (1)

1. A multiaxial loading test device for structural static tests, characterized in that: the tested structural member (7) is fixed on the loading table, and the loading tooling (6) is fixed on the upper end of the tested structural member (7); The upper end of the loading arm (1) is fixed on the frame (5), and the lower end acts on the upper end of the loading tooling (6); the twisting loading arm (2) acts on both ends of the loading tooling (6) in the horizontal direction; the bending loading arm (3) is on The vertical direction acts on both ends of the loading tool (6); the shear loading arm (4) acts on one end of the loading tool (6) in the horizontal direction; the computer (10) controls the tension and compression loading arm ( 1), torsion loading arm (2), bending loading arm (3), shearing loading arm (4); strain sensor (8) and displacement sensor (9) are connected to computer (10); computer (10) processing is obtained Measure the static test results of the structural member (7).